If you were seeking a soil colloid with a high capacity to adsorb cationic pollutants, but also with a consistent capacity to do so even as the pH varied form 4.0 to 7.5, which of the following would you choose?
A)montmorillonite
B)kaolinite
C)fine-grained mica
D)humus
E)chlorite

Question

Quizplus · Accepted Answer

Montmorillonite is a type of clay mineral that has a high surface area and a negative charge, which enables it to attract and adsorb cationic pollutants. It also has a consistent capacity to do so even as the pH varies from 4.0 to 7.5. Kaolinite, mica, and chlorite are also clay minerals, but they may not have the same capacity to adsorb cationic pollutants. Humus is organic matter in soil and is not a soil colloid.

If You Were Seeking a Soil Colloid with a High